soc-compress: Update error handling to cleanup backend

In soc compress open fail, handle cleanup of backend
to avoid backend related issues after it during
stability SSR(Subsystem restart) tests.

Change-Id: Ib4417668e308f191b832d06601ef64bfa3bcd318
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>